M. Ownegh; F. Honardoust; E. Karimi Sang chini
Abstract
That in addition to playing an educational-scientific role, it causes to touristic development. In order to introduce and evaluate geotourism potential of Quaternary phenomena in Sedimentary basin of Gorgan Plain, this study is based upon library review, consideration of previous records in regional, ...
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That in addition to playing an educational-scientific role, it causes to touristic development. In order to introduce and evaluate geotourism potential of Quaternary phenomena in Sedimentary basin of Gorgan Plain, this study is based upon library review, consideration of previous records in regional, zonal and national scales, field operations and photographic documentation. The results show that 75% of geotourism phenomena are in pattern and indicator level and 40% are placed in zonal site from the value and importance of each geotourism phenomenon points of view, respectively. Due to climatic changes, variety of weathering processes, zonal erosion system (Caspian-Alborz) and sea level fluctuations during Quaternary and ancient eras, Gorgan Plain has unique geomorphic evidences and landforms and natural structures such as continental, and coasteal sand dune with various forms and compositions, loess materials and ancient hills, tectonic-erosion origin lakes, mud volcanoes, meanders, and Gorgan-Rud and Ghara-Su deltas. Diversity of geotouristic phenomena of Quaternary in Gorgan Plain is absolutely prominent on national and the whole Caspian Sea basin scales and it is convertible to a zonal scale geopark.
J. Faslebahar; M. Pourkermani; S. Faslebahar
Abstract
Mud volcanoes are one of the interesting phenomenons that many researchers in oil field, plate tectonics and geotourism consider the most. In this regard there are many studies in the other countries, especially those which have this phenomenon and published many articles. This article is the output ...
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Mud volcanoes are one of the interesting phenomenons that many researchers in oil field, plate tectonics and geotourism consider the most. In this regard there are many studies in the other countries, especially those which have this phenomenon and published many articles. This article is the output of researches about anatomical characteristics of active, non active mud volcanoes and hidden diapir in the study region. Due to the subduction of Caspian Sea bed under the continental crust in southeast zone of Caspian Sea, there are a series of anticlines and synclinals which located in the west section NW-SE, in the middle section W-E and east section to Turkmanestan NE-SW. Due to the increase in the west thickness of Cheleken and Aghchagyl formations, Apsheron stage and Quaternary series that are calcareous, marl, clay and sandy and consist of gastropod and lamellibranches remains overlaying on each other conformity there are more mud volcanoes in west and southwest of Caspian Sea. There are 3 active, semi-active and few non active diapirs as well as a hidden one. Mud volcanoes at the southeast, semi- active and hidden diapir section of Caspian Sea, are almost in same direction with Caspian Sea fault. The seismic studies in the region show Plio–Quaternary compressive pressures and subsidence in the form of diapir is present on the surface. Anatomy of mud volcanoes of the region shows their history goes back to upper period Pliocene and scientifically their origin are tectonic-sedimentary.
